#!/bin/bash

echo -e "qingshuru \n1 xianshiriqi\n2 chakandangqmulu"
read -p "qingshuru" choice

case $choice in
        1)
                echo riqi:$(date "+%F %A")
                ;;
        2)
                echo wenjian:$(ls)
                ;;
        3)
                echo yonghu:$(whoami)
                ;;
        4)
                exit
                ;;
        *)
                echo chuowu
esac
